gpu: nvgpu: check if pmu blob is already allocated

Jira DNVGPU-20

Change-Id: If917f97ee30f830b05467b15e1ae3f8be296d140
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1206406
(cherry picked from commit bc54e4c24d2f2671b412c79a0ff2944c9575f2a5)
Reviewed-on: http://git-master/r/1210961
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp106/acr_gp106.c b/drivers/gpu/nvgpu/gp106/acr_gp106.c
index 96a2c1fd..850d07b1 100644
--- a/drivers/gpu/nvgpu/gp106/acr_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/acr_gp106.c
@@ -95,6 +95,9 @@ static int gp106_alloc_blob_space(struct gk20a *g,
         struct wpr_carveout_info wpr_inf;
         int err;
 
+        if (mem->size)
+                return 0;
+
         g->ops.pmu.get_wpr(g, &wpr_inf);
 
         /*